import * as http from 'http'
import * as fs from 'fs'
import * as url from 'url'

let pathname: string
// 创建服务器
http
  .createServer(function(request: http.IncomingMessage, response: http.ServerResponse) {
    // 解析请求，包括文件名
    pathname = url.parse(request.url || '').pathname

    // 输出请求的文件名
    console.log('Request for ' + pathname + ' received.')

    // 从文件系统中读取请求的文件内容
    fs.readFile('./views/' + pathname.substr(1), function(err, data) {
      if (err) {
        console.log(err)
        // HTTP 状态码: 404 : NOT FOUND
        // Content Type: text/plain
        response.writeHead(404, { 'Content-Type': 'text/html' })
      } else {
        // HTTP 状态码: 200 : OK
        // Content Type: text/plain
        response.writeHead(200, { 'Content-Type': 'text/html' })

        // 响应文件内容
        response.write(data.toString())
      }
      //  发送响应数据
      response.end()
    })
  })
  .listen(8081)

// 控制台会输出以下信息
console.log('Server running at http://127.0.0.1:8081/')
